Commit e85ec33d authored by Ira Weiny's avatar Ira Weiny Committed by Doug Ledford
Browse files

IB/rdmavt: add modify queue pair driver helpers 



Low level drivers need to be able to check incoming attributes as well as be
able to adjust their private data on queue pair modification.  Add 2 driver
callbacks, check_modify_qp and modify_qp, to facilitate this.

Signed-off-by: default avatarIra Weiny <ira.weiny@intel.com>
Signed-off-by: default avatarDoug Ledford <dledford@redhat.com>
parent 2b047ea7

drivers/infiniband/sw/rdmavt/qp.c

+7 −0
Original line number Diff line number Diff line
@@ -970,6 +970,10 @@ int rvt_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 
				attr_mask, link))

		goto inval;



	if (rdi->driver_f.check_modify_qp &&

	    rdi->driver_f.check_modify_qp(qp, attr, attr_mask, udata))

		goto inval;



	if (attr_mask & IB_QP_AV) {

		if (attr->ah_attr.dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE))

			goto inval;
@@ -1166,6 +1170,9 @@ int rvt_modify_qp(struct ib_qp *ibqp, struct ib_qp_attr *attr, 
	if (attr_mask & IB_QP_MAX_QP_RD_ATOMIC)

		qp->s_max_rd_atomic = attr->max_rd_atomic;



	if (rdi->driver_f.modify_qp)

		rdi->driver_f.modify_qp(qp, attr, attr_mask, udata);



	spin_unlock(&qp->s_lock);

	spin_unlock_irq(&qp->r_lock);

include/rdma/rdma_vt.h

+7 −0
Original line number Diff line number Diff line
@@ -256,6 +256,13 @@ struct rvt_driver_provided { 
			      struct rvt_ah *);

	int (*alloc_qpn)(struct rvt_dev_info *rdi, struct rvt_qpn_table *qpt,

			 enum ib_qp_type type, u8 port, gfp_t gfp);

	/**

	 * Return 0 if modification is valid, -errno otherwise

	 */

	int (*check_modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,

			       int attr_mask, struct ib_udata *udata);

	void (*modify_qp)(struct rvt_qp *qp, struct ib_qp_attr *attr,

			  int attr_mask, struct ib_udata *udata);

};



struct rvt_dev_info {

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